[media] rc-core: rename ir-raw.c

Better to be coherent and prefix this file with rc-, in order to
help to identify to what subsystem it belongs.

This is in preparaton for a latter patch that will transform the
raw handling into a separate module.
Signed-off-by: David Härdeman <david@hardeman.nu>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

drivers/media/rc/Makefile

-rc-core-objs	:= rc-main.o ir-raw.o
+rc-core-objs	:= rc-main.o rc-ir-raw.o
 
 obj-y += keymaps/
 

drivers/media/rc/ir-raw.c → drivers/media/rc/rc-ir-raw.c

-/* ir-raw.c - handle IR pulse/space events
+/* rc-ir-raw.c - handle IR pulse/space events
  *
  * Copyright (C) 2010 by Mauro Carvalho Chehab
  *